Flushing-valve.



R. A. BROOKS.

PLUSHING VALVE.

APPLICATION FILED SEPT. 18. 1909.

LIWAWo Patented Ja11.5,1915.

3 SHEETSSHEET 1.

I MW THE NORRIS PETERS C0.. PHOTO-LITHQ. WASHIN TGN. D, C.

R. A. BROOKS.

FLUSHING VALVE.

APPLICATION FILED SEPT. 18, 1909.

Patented Jan. 5, 1915.

3 SHEETS-SHEET 2.

HE NORRIS PETERS CO.. PHOTO-LITHIL, WASHINGTON. n. r

R. A. BROOKS.

FLUSHING VALVE.

APPLICATION FILED SEPT. 18, 1909. 1 Patented Jan. 5, 1915.

3 SHEETS-SHEET 3.

erZflBWoo 6 tinrrnn sat raarn'r marrow ROBERT A. BROOKS, OF CHICAGO, ILLINOIS, ASSIGNOB. T0 BROlOKS MANUFACTURING 00., OF CHICAGO, ILLINOIS, A COBTPORA'IIQN OF ARIZONA.

FLUSHIN G-VALVE.

iaeaavr.

Specification of Letters Patent.

Patented d an. 5, 1915.

Application filed September 18, 1999. Serial No. 518,450.

To all whom it may concern:

Be it known that 1, ROBERT A. BROOKS, a citizen of the United States, and a resident of the city of Chicago,Cook county, Illinois, have invented certain new and useful Improvements in Flushing-Valves; andl do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to that class of flushing valves wherein the closing of the valve after each flushing operation is automatically regulated and controlled by a fluid other than the flushing fluid, and wherein the closure is effected both against and with the pressure.

The main object of this invention is to afford a construction adapted to close with slight pressure and adapted for self regulation to accurately time the flush or in other words, to limit the delivery of the flushing fluid therethrough in quantity under any variation in the pressure thereof.

As shown in the drawings: Figure 1 is a central vertical section of a device embodying my invention, showing the flushing valve closed and the shut-off valve also closed. Fig. 2 is a similar view showing the flushing valve and the shut-oil valve both fully opened. Fig. 3 is a section taken on line 33 of Fig. 1. Fig. at is a section taken on line an of Fig. 1. Fig. 5 is a section taken on line 55 of Fig. 2, with parts omitted. Fig. 6 is a section taken on line 6-43 of Fig. 2. Fig. 7 is a vertical section of the valve casing and closure showing the latter partly in elevation and detached from the fluid operated closing means. Fig. 8 is an enlarged section 011 line 8-8 of Fig. 7. Fig. 9 is a transverse section of the valve for controlling the flow of the regulating fluid. Fig. 10 is an enlarged detail of the piston in the controlling cylinder showing the stem broken. Fig. 11 is an enlarged fragmentary, vertical section of a part of the differential valve closure. Fig. 12 isaside elevation ofatoilet closet provided with a flushing valve embodying my invention and illustrating the manner of connecting the same in place. Fig. 13 is a top plan view of the same.

As shown in the drawings: A, indicates the flushing valve casing cored to afiord a by-pass channel a, which, as shown, is approximately cylindric excepting that one side thereof is provided with a lateral projection. Extending oppositely from the casing from said by-pass channel is a tubular extension a, externally threaded at its end and adapted to have threaded engagement with the collar of, whereby the pipe end a is connected with the flush valve. As shown, in said tubular extension at, is provided a butterfly valve closure a, the shaft a of which is journaled in and extends through the walls of said tubular extension and is adapted to be engaged on the outer end by means of a wrench or other tool for turning the same to adjust the flow, as shown in Fig. 2, to close the inlet to the casing, as shown in Fig. 1, or to open the same. At its lower end said casing is reduced in diameter and is internally threaded to receive the externally threaded end of the discharge pipe 4:, which connects with the closet in any suitable manner, and as shown, a collar a provided with an internal packing ring a is provided on said pipe whereby escape of the water by upward pressure at the oint with the toilet is prohibited.

Within the casing thus described is provided an inner chamber comprising a partition B, which is coaxial with the casing A and extends inwardly from and communicates with the inlet orifice or pipe. At its middle the chamber extends downwardly to afford a recess for the end of the valve clo sure hereinafter described. The walls of said inner chamber extend upwardly concentric with the walls of the casing and afford an annular seat at the top indicated by b, which is slightly above the top of said inlet tube or pipe. Seated on said annularseat and firmly held in place by means of a sleeve B, of metal having numerous apertures therethrough of considerable size is an annular closure C, which, as shown, is provided with a peripheral flange above the seat to receive the lower end of the sleeve B, and is provided on its under side with a suitable packing washer 0, to engage on said seat and within the packing washer is flanged downwardly to afford a downwardly directed seat 0.

Slidably engaged in the sleeve B, is a hollow differential valve closure. This as shown, comprises a winged stem C, the wings of which fit Within the seat 0, and as shown, at its upper end said tubular stem is enlarged to afford a cup shaped chamber, and is extended to afford a rim 0 which, fits within the sleeve B, and is provided, as shown, with an upwardly directed flange 0, near the outer periphery thereof. At its lower end said tubular sleeve is provided with a peripheral flange c, and below the same is externally threaded to receive the internally threaded reducing collar 0 which is provided with a flange c complemental with the flange 0 and engages a packing washer 0 against said flange. As shown, a flanged screw cap 1), is engaged on the upper externally threaded endof the casing and acts to press a packing washer (Z, firmly down upon said casing and sleeve to afford a water and air tight joint. Said cap is provided with a concentric flange cl, integral therewith on the upper side and also internally threaded with which the controlling cylinder d has threaded connection.

Extending longitudinally of the tubular valve closure is a stem or red D which extends through a suitable gland d in said closing cap D, and on its lower end, which extends through said tubular stem and collar 0*, is provided with jam nuts dd whereby the packing washers 6Z8, are secured in place to close the vent through said tubular closure. As shown also, threaded on said stem or red D is a spindle or spool shaped body D which fits somewhat loosely in the bore of the tubular closure near its middle and tapers upwardly therefrom and also tapers or is inclined downwardly so that when forced downwardly slightly below the collar 0 it permits a comparatively free vent for the trapped water above the tubular closure, thus permitting inlet pressure to force the valve to open position as shown in Fig. 2, after the vent valve D has been opened.

Means are provided for actuating said vent valve closure comprising a hydraulically operated cylinder slidably secured within the cylinder (P. For this purpose, said cylinder 6?, ,is longitudinally slotted on the rear side thereof, and fitted within said cylinder is a head E, peripherally flanged, said flange being internally threaded, and also provided with an integral, outwardly directed arm (5, adapted to be operated in any suitable manner to actuate said hydraulic cylinder. Threaded into said head E is the cylinder shell e, on the upper end of which is threaded a head c and as shown, said upper head 6 is provided with a central aperture and gland 0 through which extends a tubular stem 6, which is threaded at its upper end into a suitable nut 0 and jam nut 6, carried on the cap c of the cylinder (Z As shown also a lock nut 0 is threaded on said stem on the inner side of said head and is adapted to be sprung over a projection 0 on the inner side of the head, which acts to hold said locking nut or washer in adjusted position. Threaded on the inner end of said tubular stem 0, as shown more fully in Fig. 10, is a head 6 against which is secured a leather or other suitable hydraulic washer 0 by means of an inner head or follower a, which is threaded on the end of said stem 0 and is also provided on its under side with inwardly and downwardly projecting flanges 6 within which is engaged at its edges a more or less resilient strip 6 which, when pressure is exerted upwardly thereagainst as in the rising of the cylinder, is pressed upwardly to close or partly close the bore in said tubular stem a the degree of such inward springing due to such pressure depending, of course, upon the resiliency of said strip and its dimensions within the flanges e. As shown, a strong pushing spring 6 bears against the head of said piston and upwardly on the head of the cylinder 0, and acts normally to force said cylinder upwardly as the fluid escapes from the bottom thereof, through and above the valve or valves in the piston. For the purpose of assisting in the regulation of this flow, one or more apertures are provided in said stem and slidably engaged therein is a valve closure 0 which is notched or cut away on one side to permit the upward flow of the fluid therepast and through the aperture in said tubular stem, as shown in Figs. 1 and 2. Of course, any suitable actuating means may be employed for forcing the cyl- 2.1

inder downwardly from the position shown in Fig. 1, and to the position shown in Fig. 2, for the purpose of flushing the bowl. Conveniently, however, a lever F, is pivotally engaged on the side of the flushing valve after the same has been en aged on the toilet'closet and extending outwardly and partly around and to the rear of said flushometer, is an arm f, connected by means of a link f, with the outwardly extending lever 6, before described.

As shown, and to further enable the valve to be rigidly secured in closed position in the vent when desiring to adjust or regulate or repair the same, a set screw G, is thrcaded through the casing below the vent valve and into position to firmly engage said vent valve against its seat, and as shown, is provided with a gland g, to prevent leakage thereat. In the construction also shown, it

is important to pivotally engage the lever F on the side of the flushometer. For this purpose, the lever F, is provided in its inner end with a longitudinal socket adapted to receive therein the cylindric pin 7, anchored in the side of the casing, and as shown, said end of said lever is transversely slotted, as shown in Fig. 8, and a set screw f engaged in said pin holds said lever in firm engagement therewith, but permits of rotational movement when it is desired to draw the cylinder downwardly.

The operation is as follows: Of course, with the valve a", closed, as may readily be accomplished, no appreciable amount of water or the fluid to be flushed can escape past said valve, and in consequence, the flushometer may be disassembled for any purpose, repair or otherwise, without danger of leakage or the spilling of its contents. lVhen in operative position, of course, the valve (4, is fully opened, as shown in Fig. 2, in which event, it afiords very little, if any, obstruction to the inlet pressure. If new the cylinder e,be drawn downwardly to the position shown in Fig. 2, such downward movement forces the vent valve D open with the effect that instantly the pressures within and without the tubular differential valve closure are unbalanced owing to the larger area exposed to pressure at the upper end of said tubular valve closure and within the sleeve B. In consequence, such pressure instantly forces the tubular valve closure downwardly to the position shown in Fig. 2, with the effect of opening the valve and permitting the water to flow upwardly through the sleeve B, and through the apertures therein into the space and bypass between said sleeve and the outer casing, as shown in. Fig. 2. In accomplishing this, and at the limit of the downward movement, the vent valve closure seats both because of the downward movement of the tubular valve D and because of the tendency to upward movement of the hydraulic closing cylinder 6 due to the action of the spring 6 on the tubular stem 6 Inasmuch as the pressures are equalized when the tubular valve closure is thus fully opened and the vent valve D closed, and because of the free flow of the flushing fluid through the tubular valve closure, it follows that such upward movement, due very largely to the pressure of such spring, tends to elevate the tubular valve closure with the stem D and in consequence the flushing continues until the large upper end of said tubular valve closure has traveled well into the upper and non-perforated end of the sleeve B. at which time the closure at the lower end thereof is projecting over the seat 0' on the annular member C. The upward pressure of the water tends constantly to elevate somewhat the tubular closure from the vent valve closure, thus permitting the water to constantly escape from said. tubular closure and permitting the same to slowly rise until the packing washer at the lower end of the closure firmly seats on the annular seat, at which time the valve is fully closed; but owing to the restriction at the vent valve and the constant tendency of the tubular closure, until full closure occurs,to rise from said vent valve closure, hammering is entirely avoided. The continued upward movement of the hydraulic cylinder 6 from the beginning tends to force the liquid upwardly through the central aperture in the piston and the tubular piston stem or rod 6, such upward rush, of course, tending to somewhat flatten the convex strip 6 to automatically regulate the inlet to said tubular pipe; and also the closure e in said pipe serves to some extent to regulate or limit this movement.

Of course, I am aware that the operating lever may be connected in any suitable man ner with the operating arm 6, of the hydraulic cylinder and obviously, if desired, this device may be connected in any suitable manner with the toilet whereby any seat action device may serve to flush the valve. Very numerous details of construction may be varied without departing from the principles of this invention and I therefore do not purpose limiting myself otherwise than necessitated by the prior art.

I claim as my invention:

1. A, fiushometer, embodying a casing, a seat therein, a differential valve normally seating to close said seat, a vent valve acting to admit inlet pressure on said differential valve to operate the same with said inlet pressure, controlling means embracing a closed fluid containing cup and a piston therein one of which is connected to said vent valve, a passageway being provided from one side of said piston to the other, and separate automatically operating means exterior to said passageway for choking the flow of fluid through said passageway un der increased speed of said piston.

2. A. fiushometer, embodying a casing, a seat therein, a differential valve normally seating to close said seat, a vent valve acting to admit inlet pressure on said differential valve to operate the same with said inlet pressure, controlling means embracing a closed fluid containing cup and a piston therein one of which is connected to said vent valve, a passageway being provided from one side of said piston to the other, and separate automatically operating resilient means exterior to said passageway for choking the flow of fluid through said passageway under increased speed of said piston.

3. A fiushometer, embodying a casing, a

&

seat therein, I a differential valve normally seating to close said seat, a vent valve acting to admit inlet pressure on said diflerential valve to open the same with said inlet pres sure, and controlling means embracing a closed fluid containing cup and a piston in said cup one of which is connected to said vent valve,'and a resilient strip operated by said fiuid for variably regulating the flow of fluid through a passageway from one side 10 of said piston to its other side.

In testimony whereof I have hereunto subscribed my name in the presence of two subscribing witnesses.

ROBERT A. BROOKS.

Vitnesses J K. E. HANNAH. J. W. ANGELL.

Copies at this-patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0." 

